Extensive new .describe() annotations added across many Zod schema types used by the SDK API, including:
- Model info:
value,displayName,descriptionfields - Skill info:
name,description,argumentHintfields - MCP server status: connection status, tools, server info, error messages
setMcpServersoperation results: added/removed servers, error maprewindFilesoperation results- User account info
- Config scopes:
"local","user","project","claudeai","managed" - Permission modes:
"default","acceptEdits","bypassPermissions"
This improves the developer experience for anyone building on the Claude Code SDK.
Evidence
Schema descriptions (search for "Information about an available model", "Status information for an MCP server connection", "Config scope for settings")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.